OCR GCSE Computer Science · J277
Paper 1
Revise: Digital Sound SamplingEach measurement is called a sample.
- Revise: Sound Quality and File Size
A measurement of the amplitude, or height, of a sound wave at a particular moment.
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GCSE Computer Science · key term
One measurement of the amplitude of a sound wave at a particular time.
Used by OCR
Paper 1
Revise: Digital Sound SamplingEach measurement is called a sample.
A measurement of the amplitude, or height, of a sound wave at a particular moment.
Complete the explanation by stating that each sample value is represented in binary and stored. Saying only that the sound is ‘converted to digital’ does not explain the process.
Explain the mechanism as well as the outcome: a higher sample rate means more samples per second; a higher bit depth means more bits per sample.
Sample rate is measured in Hz, bit depth in bits per sample, and duration in seconds. A size calculated in bits must be divided by 8 to convert it to bytes.
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